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Sodium borohydride to 9-fluorenone that you used in the experiment (we used 100 mg of 9-fluorenone and 10 mg sodium borohydride). why is it necessary to use a greater molar ratio than theoretical?
Give a brief discussion of the chemistry of Diels-Alder reactions and why do ENDO products usually predominate
A 1.502 gram sample of a compound of aluminum and sulfur is known to contain exactly 0.540 grams of aluminum. Determine the empirical formula for the substance.
What mass of NaOH is needed to precipitate the Cd2+ ions from 44.0 mL of 0.500 M Cd(NO3)2 solution?
An airplane is pressurized to 650 mmHg, which is the atmospheric pressure at a ski resort at 13000 ft altitude: a) if air is 21% oxygen, what is the partial pressure of oxygen on the plan
The following reaction has an equilibrium constant of Kp = 3.5*10^4 at 1495 K: Br2(g) + H2(g) 2HBr(g). What is Kc for this reaction?
The osmotic pressure of blood at normal body temp of 37 deg C is 7.65 atm. Sometimes it is necessary to add a saline (NaCl) solution by intravenous injection to a patient in the ER.
Use simple structure and bonding models to account for why carbon carbon single bonds in ethane rotate freely while carbon-carbon double bonds in ethene do not rotate.
calculate th eapproximate freezing points of the following aqueous solutions (assume complete dissociation) a. 0.800 m NaCl b. 0.800 m
A sample containing NaCl, Na2SO4, and NaNO3 gives the following elemental analysis: Na: 35.315%, O: 36.55%; Cl: 15.17%. Calculate the mass percent of each compound in the sample.
bismuth oxide reacts with carbon to form bismuth metal bi2o3s3cs -gt 2bis3cogwhen 355g or bi2o3 reacts with excess
Given the following Delta H°298 values in kcal/mol , where "gr" stands for graphite, find Delta f H°298 of Fe(s) and Fe2O3(s) Fe2O3(s) + 3C (gr) --> 2Fe(s) + 3CO(g) 117 FeO(s) + C(gr) --> Fe(s) +CO(g) 37 2CO(g) + O2(g) --> 2CO2(g) -135 C(gr) + O2(..
Give the common name for the following compound: 2,2-dimethyloct-3-yne CH3-C?C-CH2-CH2-CH2-CH3
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